openjdk源码
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/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.*;
import java.net.*;
/**
* @test
* @bug 5089488
* @summary java.net.Socket checks for old-style impls
*/
public class OldImpl {
/**
* A no-op SocketImpl descendant.
*/
static class FunkySocketImpl extends SocketImpl {
protected void accept(SocketImpl impl) throws IOException {
}
protected int available(){
return 0;
}
protected void bind(InetAddress host, int port){
}
protected void close(){
}
protected void connect(InetAddress address, int port){
}
protected void connect(String host, int port){
}
protected void connect(SocketAddress a,int b){
}
protected void create(boolean stream){
}
protected InputStream getInputStream(){
return null;
}
protected OutputStream getOutputStream(){
return null;
}
protected void listen(int backlog){
}
public Object getOption(int optID){
return null;
}
public void setOption(int optID, Object value){
}
protected void sendUrgentData(int i){
}
}
static class FunkyWunkySocketImpl extends FunkySocketImpl {}
/**
* A no-op Socket descendant.
*/
static class FunkySocket extends Socket {
public FunkySocket(SocketImpl impl) throws IOException {
super(impl);
}
}
public static void main(String args[]) throws Exception {
FunkyWunkySocketImpl socketImpl = new FunkyWunkySocketImpl();
FunkySocket socko = new FunkySocket(socketImpl);
if (socko.isBound()) {
throw new RuntimeException ("socket is not really bound");
}
}
}